/**
 * Created by PanJiaChen on 16/11/18.
 */

/**
 * @param {string} path
 * @returns {Boolean}
 */
export function isExternal(path) {
  return /^(https?:|mailto:|tel:)/.test(path)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUsername(str) {
  const valid_map = ['admin', 'editor']
  return valid_map.indexOf(str.trim()) >= 0
}

/**
 * @param {string} url
 * @returns {Boolean}
 */
export function validURL(url) {
  const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
  return reg.test(url)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validLowerCase(str) {
  const reg = /^[a-z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUpperCase(str) {
  const reg = /^[A-Z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validAlphabets(str) {
  const reg = /^[A-Za-z]+$/
  return reg.test(str)
}

/**
 * @param {string} email
 * @returns {Boolean}
 */
export function validEmail(email) {
  const reg = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
  return reg.test(email)
}

/**
 * 获取 obj 的类型
 * [object object]
 * [object function]
 * [object string]
 * [object array]
 * ...
 * @param obj
 */
export function getType(obj) {
  return Object.prototype.toString.call(obj).toLowerCase()
}


/**
 * @param {string} str
 * @returns {Boolean}
 */
export function isString(str) {
  return getType(str) === '[object string]'
}

/**
 * 判断 obj 是否为 Object 类型
 * @param obj
 */
export function isObject(obj) {
  return getType(obj) === '[object object]'
}

/**
 * 判断 obj 是否为 Function
 * @param obj
 */
export function isFunction(obj) {
  return getType(obj) === '[object function]'
}

/**
 * 判断 obj 是否为 Array 数组
 * @param obj
 */
export function isArray(obj) {
  return getType(obj) === '[object array]'
}

/**
 * 判断对象是否为空,
 * {}, null, undefined, '', [], 0 都返回 true
 * @param obj
 * @return {boolean}
 */
export function isEmpty(obj) {
  if (isObject(obj)) {
    return Object.keys(obj).length === 0
  } else if (isArray(obj)) {
    return obj.length === 0
  } else {
    return !obj
  }
}


/**
 * 表单验证规则
 */
export const formRules = {
  required: [
    { required: true, message: '该选项不可为空', trigger: 'blur' }
  ],
  email: [
    { type: 'email', required: true, message: '请输入正确的邮箱', trigger: 'change' }
  ],
  phone: [
    { required: true, pattern: /^1[3456789]\d{9}$/, message: '请输入正确的手机号', trigger: 'change' }
  ]
}
